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[src/trunk]: src/lib/libc/time welcome to tzcond-2016f
details: https://anonhg.NetBSD.org/src/rev/6c10b9118cd1
branches: trunk
changeset: 817935:6c10b9118cd1
user: christos <christos%NetBSD.org@localhost>
date: Fri Sep 16 17:12:06 2016 +0000
description:
welcome to tzcond-2016f
diffstat:
lib/libc/time/Makefile | 2 +-
lib/libc/time/NEWS | 129 ++++++++
lib/libc/time/Theory | 7 +-
lib/libc/time/tz-art.htm | 247 ++++++++------
lib/libc/time/tz-how-to.html | 680 +++++++++++++++++++++++++++++++++++++++++++
lib/libc/time/tz-link.htm | 163 +++++----
lib/libc/time/zic.c | 64 +++-
7 files changed, 1097 insertions(+), 195 deletions(-)
diffs (truncated from 1718 to 300 lines):
diff -r 8afb5691175f -r 6c10b9118cd1 lib/libc/time/Makefile
--- a/lib/libc/time/Makefile Fri Sep 16 15:24:47 2016 +0000
+++ b/lib/libc/time/Makefile Fri Sep 16 17:12:06 2016 +0000
@@ -5,7 +5,7 @@
PACKAGE= tzcode
# Version numbers of the code and data distributions.
-VERSION= 2016b
+VERSION= 2016f
# Email address for bug reports.
BUGEMAIL= tz%iana.org@localhost
diff -r 8afb5691175f -r 6c10b9118cd1 lib/libc/time/NEWS
--- a/lib/libc/time/NEWS Fri Sep 16 15:24:47 2016 +0000
+++ b/lib/libc/time/NEWS Fri Sep 16 17:12:06 2016 +0000
@@ -1,7 +1,136 @@
News for the tz database
+Release 2016f - 2016-07-05 16:26:51 +0200
+
+ Changes affecting future time stamps
+
+ The Egyptian government changed its mind on short notice, and
+ Africa/Cairo will not introduce DST starting 2016-07-07 after all.
+ (Thanks to Mina Samuel.)
+
+ Asia/Novosibirsk switches from +06 to +07 on 2016-07-24 at 02:00.
+ (Thanks to Stepan Golosunov.)
+
+ Changes to past and future time stamps
+
+ Asia/Novokuznetsk and Asia/Novosibirsk now use numeric time zone
+ abbreviations instead of invented ones.
+
+ Changes affecting past time stamps
+
+ Europe/Minsk's 1992-03-29 spring-forward transition was at 02:00 not 00:00.
+ (Thanks to Stepan Golosunov.)
+
+
+Release 2016e - 2016-06-14 08:46:16 -0700
+
+ Changes affecting future time stamps
+
+ Africa/Cairo observes DST in 2016 from July 7 to the end of October.
+ Guess October 27 and 24:00 transitions. (Thanks to Steffen Thorsen.)
+ For future years, guess April's last Thursday to October's last
+ Thursday except for Ramadan.
+
+ Changes affecting past time stamps
+
+ Locations while uninhabited now use '-00', not 'zzz', as a
+ placeholder time zone abbreviation. This is inspired by Internet
+ RFC 3339 and is more consistent with numeric time zone
+ abbreviations already used elsewhere. The change affects several
+ arctic and antarctic locations, e.g., America/Cambridge_Bay before
+ 1920 and Antarctica/Troll before 2005.
+
+ Asia/Baku's 1992-09-27 transition from +04 (DST) to +04 (non-DST) was
+ at 03:00, not 23:00 the previous day. (Thanks to Michael Deckers.)
+
+ Changes to code
+
+ zic now outputs a dummy transition at time 2**31 - 1 in zones
+ whose POSIX-style TZ strings contain a '<'. This mostly works
+ around Qt bug 53071 <https://bugreports.qt.io/browse/QTBUG-53071>.
+ (Thanks to Zhanibek Adilbekov for reporting the Qt bug.)
+
+ Changes affecting documentation and commentary
+
+ tz-link.htm says why governments should give plenty of notice for
+ time zone or DST changes, and refers to Matt Johnson's blog post.
+
+ tz-link.htm mentions Tzdata for Elixir. (Thanks to Matt Johnson.)
+
+
+Release 2016d - 2016-04-17 22:50:29 -0700
+
+ Changes affecting future time stamps
+
+ America/Caracas switches from -0430 to -04 on 2016-05-01 at 02:30.
+ (Thanks to Alexander Krivenyshev for the heads-up.)
+
+ Asia/Magadan switches from +10 to +11 on 2016-04-24 at 02:00.
+ (Thanks to Alexander Krivenyshev and Matt Johnson.)
+
+ New zone Asia/Tomsk, split off from Asia/Novosibirsk. It covers
+ Tomsk Oblast, Russia, which switches from +06 to +07 on 2016-05-29
+ at 02:00. (Thanks to Stepan Golosunov.)
+
+ Changes affecting past time stamps
+
+ New zone Europe/Kirov, split off from Europe/Volgograd. It covers
+ Kirov Oblast, Russia, which switched from +04/+05 to +03/+04 on
+ 1989-03-26 at 02:00, roughly a year after Europe/Volgograd made
+ the same change. (Thanks to Stepan Golosunov.)
+
+ Russia and nearby locations had daylight-saving transitions on
+ 1992-03-29 at 02:00 and 1992-09-27 at 03:00, instead of on
+ 1992-03-28 at 23:00 and 1992-09-26 at 23:00. (Thanks to Stepan
+ Golosunov.)
+
+ Many corrections to historical time in Kazakhstan from 1991
+ through 2005. (Thanks to Stepan Golosunov.) Replace Kazakhstan's
+ invented time zone abbreviations with numeric abbreviations.
+
+ Changes to commentary
+
+ Mention Internet RFCs 7808 (TZDIST) and 7809 (CalDAV time zone references).
+
+
+Release 2016c - 2016-03-23 00:51:27 -0700
+
+ Changes affecting future time stamps
+
+ Azerbaijan no longer observes DST. (Thanks to Steffen Thorsen.)
+
+ Chile reverts from permanent to seasonal DST. (Thanks to Juan
+ Correa for the heads-up, and to Tim Parenti for corrections.)
+ Guess that future transitions are August's and May's second
+ Saturdays at 24:00 mainland time. Also, call the period from
+ 2014-09-07 through 2016-05-14 daylight saving time instead of
+ standard time, as that seems more appropriate now.
+
+ Changes affecting past time stamps
+
+ Europe/Kaliningrad and Europe/Vilnius changed from +03/+04 to
+ +02/+03 on 1989-03-26, not 1991-03-31. Europe/Volgograd changed
+ from +04/+05 to +03/+04 on 1988-03-27, not 1989-03-26.
+ (Thanks to Stepan Golosunov.)
+
+ Changes to commentary
+
+ Several updates and URLs for historical and proposed Russian changes.
+ (Thanks to Stepan Golosunov, Matt Johnson, and Alexander Krivenyshev.)
+
+
Release 2016b - 2016-03-12 17:30:14 -0800
+ Compatibility note
+
+ Starting with release 2016b, some data entries cause zic implementations
+ derived from tz releases 2005j through 2015e to issue warnings like
+ "time zone abbreviation differs from POSIX standard (+03)".
+ These warnings should not otherwise affect zic's output and can safely be
+ ignored on today's platforms, as the warnings refer to a restriction in
+ POSIX.1-1988 that was removed in POSIX.1-2001. One way to suppress the
+ warnings is to upgrade to zic derived from tz releases 2015f and later.
+
Changes affecting future time stamps
New zones Europe/Astrakhan and Europe/Ulyanovsk for Astrakhan and
diff -r 8afb5691175f -r 6c10b9118cd1 lib/libc/time/Theory
--- a/lib/libc/time/Theory Fri Sep 16 15:24:47 2016 +0000
+++ b/lib/libc/time/Theory Fri Sep 16 17:12:06 2016 +0000
@@ -227,9 +227,10 @@
name identifying each zone and append 'T', 'ST', etc.
as before; e.g. 'VLAST' for VLAdivostok Summer Time.
- Use UT (with time zone abbreviation 'zzz') for locations while
- uninhabited. The 'zzz' mnemonic is that these locations are,
- in some sense, asleep.
+ Use UT (with time zone abbreviation '-00') for locations while
+ uninhabited. The leading '-' is a flag that the time
+ zone is in some sense undefined; this notation is
+ derived from Internet RFC 3339.
Application writers should note that these abbreviations are ambiguous
in practice: e.g. 'CST' has a different meaning in China than
diff -r 8afb5691175f -r 6c10b9118cd1 lib/libc/time/tz-art.htm
--- a/lib/libc/time/tz-art.htm Fri Sep 16 15:24:47 2016 +0000
+++ b/lib/libc/time/tz-art.htm Fri Sep 16 17:12:06 2016 +0000
@@ -8,16 +8,23 @@
</head>
<body>
<h1>Time and the Arts</h1>
-<p>
-This file is in the public domain, so clarified as of
-2009-05-17 by Arthur David Olson.
-</p>
-<p>
-Please send corrections to this web page to the
-<a href="mailto:tz%iana.org@localhost";>time zone mailing list</a>.</p>
-<p>
-See also <a href="tz-link.htm">Sources for Time Zone and Daylight Saving Time Data</a>.</p>
-<hr>
+<h2>Documentaries</h2>
+<ul>
+<li>
+"<a href="https://www.youtube.com/watch?v=84aWtseb2-4";>Daylight
+Saving Time Explained</a>" (2011; 6:39) lightly covers daylight saving
+time's theory, history, pros and cons. Among other things, it explains
+Arizona's daylight-saving enclaves quite well.</li>
+<li>
+"<a href="https://www.youtube.com/watch?v=-5wpm-gesOY";>The Problem
+with Time & Timezones – Computerphile</a>" (2013; 10:12) delves
+into problems that programmers have with timekeeping.</li>
+<li>
+"About Time" (1962; 53 minutes) is part of the the
+Bell Science extravaganza, with Frank Baxter, Richard Deacon, and Les Tremayne.
+(<a href="http://www.imdb.com/title/tt0154110/";>IMDb entry</a>.)</li>
+</ul>
+<h2>Music</h2>
<p>
Data on recordings of "Save That Time," Russ Long, Serrob Publishing, BMI:</p>
<table>
@@ -246,8 +253,80 @@
<tr><td><a href="http://www.allmusic.com/album/youre-getting-better-the-word-jazz-dot-masters-mw0000736197";>AMG Rating</a></td><td>4.5 stars</td></tr>
<tr><td>Notes</td><td>Includes the piece "What Time Is It"
("He knew what time it was everywhere...that counted").</td></tr>
-<tr><td> </td></tr>
+</table>
+
+<h2>TV episodes</h2>
+<ul>
+<li>
+An episode of <em>The Adventures of Superman</em> entitled "The Mysterious
+Cube," first aired 1958-02-24, had Superman convincing the controllers
+of the Arlington Time Signal to broadcast ahead of actual time;
+doing so got a crook trying to be declared dead to
+emerge a bit too early from the titular enclosure.
+</li>
+<li>
+The 1960s ITC television series <em>The Prisoner</em> included an episode
+entitled "The Chimes of Big Ben" in which our protagonist tumbled to
+the fraudulent nature of a Poland-to-England escape upon hearing "Big
+Ben" chiming on Polish local time.
+</li>
+<li>
+The series <em>Seinfeld</em> included an episode entitled "The Susie," first
+broadcast 1997-02-13, in which Kramer decides that daylight saving time
+isn't coming fast enough, so he sets his watch ahead an hour.
+</li>
+<li>
+The "20 Hours in America" episode of <em>The West Wing</em>,
+first aired 2002-09-25,
+saw White House staffers stranded in Indiana; they thought they had time to
+catch Air Force One but were done in by intra-Indiana local time changes.
+</li>
+<li>
+"In what time zone would you find New York City?" was a $200 question on
+the 1999-11-13 United States airing of <em>Who Wants to Be a Millionaire?</em>,
+and "In 1883, what industry led the movement to divide the U.S. into four time
+zones?" was a $32,000 question on the 2001-05-23 United States airing of
+the same show. At this rate, the million-dollar time-zone
+question should have been asked 2002-06-04.
+</li>
+<li>
+A private jet's mid-flight change of time zones distorts Alison Dubois'
+premonition in the "We Had a Dream" episode of <em>Medium</em>
+(originally aired 2007-02-28).
+</li>
+<li>
+In the <em>30 Rock</em> episode "Anna Howard Shaw Day"
+(first broadcast 2010-02-11),
+Jack Donaghy's date realizes that a Geneva-to-New-York business phone call
+received in the evening must be fake given the difference in local times.
+</li>
+<li>
+In the "Run by the Monkeys" episode of <em>Da Vinci's Inquest</em>
+(first broadcast 2002-11-17),
+a witness in a five-year-old fire case realizes they may not have set
+their clock back when daylight saving ended on the day of the fire,
+introducing the possibility of an hour when arson might have occurred.
+</li>
+<li>
+In "The Todd Couple" episode of <em>Outsourced</em> (first aired 2011-02-10),
+Manmeet sets up Valentine's Day teledates for 6:00 and 9:00pm;
+since one is with a New Yorker and the other with a San Franciscan,
+hilarity ensues.
+(Never mind that this should be 7:30am in Mumbai, yet for some reason the show
+proceeds as though it's also mid-evening there.)
+</li>
+<li>
+In the "14 Days to Go"/"T Minus..." episode of
+<em>You, Me and the Apocalypse</em>
+(first aired 2015-11-11 in the UK, 2016-03-10 in the US),
+the success of a mission to deal with a comet
+hinges on whether or not Russia observes daylight saving time.
+(In the US, the episode first aired in the week before the switch to DST.)
+</li>
+</ul>
+
+<table>
<tr><td>TV episode title</td><td>The Lost Hour</td>
<tr><td>TV series</td><td><em>Eerie, Indiana</em></td>
<tr><td>TV episode number</td><td>10</td>
@@ -281,8 +360,11 @@
<tr><td>Air date</td><td>2016-01-17</td></tr>
<tr><td>Notes</td><td>The applicability of a contract hinges on the
time zone associated with a video time stamp.</td></tr>
-<tr><td> </td></tr>
+</table>
+<h2>Books, plays, and magazines</h2>
+
+<table>
<tr><td>Artist</td><td>Jules Verne</td></tr>
<tr><td>Book</td><td><em>Around the World in Eighty Days</em>
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